Keil & Delitzsch, on 1Chr 2:18

“And Caleb the son of Hesron took a wife named Azuba, of whom he had Jerioth: and her sons were Jaser, and Sobab, and Ardon.”

“And after that Hezron was dead in Calebephratah,.... Supposed to be the same with Bethlehem; and was so called, both from Caleb the son of Hezron, and Ephrath his wife, Ch1 2:19, then Abiah, Hezron's wife, bare him Ashur the father of Tekoa; being left with child by him at his death; the whole verse is paraphrased thus in the Targum,"and after Hezron died in the house of Caleb his son in Ephrath, the wife of Hezron the daughter of Machir was left with child, and she bare to him after his death Ashur the prince of the Tekoites;''whose son gave name very probably to the city of Tekoa, Sa2 14:2.”

Imported from an open dataset — not yet checked against the printed edition.